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$592+ Cheap flights from St. Louis (STL) to Copenhagen (CPH)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CPH
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Lambert-St Louis to Kastrup Copenhagen are usually found in January or October, booked 75 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Find flight deals from St. Louis to Copenhagen

Cheapest flights from St. Louis to Copenhagen
Explore the most affordable flight options available from St. Louis to Copenhagen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/34:32 pmSTL - CPH
2 stops15h 08mDelta
Sun 12/76:00 amCPH - STL
2 stops18h 10mDelta
Deal found 10/26$598
This Expedia deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/246:43 pmSTL - CPH
2 stops15h 52mLufthansa
Tue 12/27:00 pmCPH - STL
1 stop25h 55mLufthansa
Deal found 10/27$606
This United deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/245:24 pmSTL - CPH
2 stops17h 11mMultiple Airlines
Tue 12/22:20 pmCPH - STL
2 stops40h 22mMultiple Airlines
Deal found 10/27$616
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:43 pmSTL - CPH
2 stops15h 52mMultiple Airlines
Wed 2/410:05 amCPH - STL
2 stops16h 22mMultiple Airlines
Deal found 10/26$689
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/271:10 pmSTL - CPH
2 stops15h 15mUnited Airlines
Thu 12/41:10 pmCPH - STL
2 stops17h 32mUnited Airlines
Deal found 10/28$697
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/123:50 pmSTL - CPH
1 stop12h 55mMultiple Airlines
Wed 2/410:05 amCPH - STL
2 stops18h 08mMultiple Airlines
Deal found 10/26$698
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/33:50 pmSTL - CPH
1 stop14h 45mUnited Airlines
Sun 12/76:50 amCPH - STL
2 stops21h 50mUnited Airlines
Deal found 10/25$701
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/98:00 amSTL - CPH
2 stops26h 35mUnited Airlines
Sun 11/166:50 amCPH - STL
2 stops22h 32mUnited Airlines
Deal found 10/27$737
This KAYAK deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2710:00 amSTL - CPH
2 stops16h 20mLufthansa
Thu 12/412:30 pmCPH - STL
1 stop32h 25mLufthansa
Deal found 10/28$760

Cheap flight deals from St. Louis to Copenhagen

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Copenhagen (CPH). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$561
(SmartFares)

Popular in

June

Cheapest in

January

Average price

$715
Provider with most accurate pricing for Lambert-St Louis-Kastrup Copenhagen flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Kastrup Copenhagen flights.
Search Deals
From Lambert-St Louis to Kastrup Copenhagen
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($127 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Copenhagen that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 28, 2025.
Use the filters below to find and compare flights from St. Louis to Copenhagen that are best for you.

Fly from

St. Louis

Fly to

Copenhagen

Route

Depart

Return

Price

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 2/2

6:57 pm-7:50 pm

2 stops17h 53m

Kastrup Copenhagen

Sat 2/14

6:00 am-8:39 pm

2 stops21h 39m

$592

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 12/3

4:32 pm-2:40 pm

2 stops15h 08m

Kastrup Copenhagen

Sun 12/7

6:00 am-11:42 pm

2 stops24h 42m

$598

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 11/24

6:43 pm-5:35 pm

2 stops15h 52m

Kastrup Copenhagen

Tue 12/2

7:00 pm-1:55 pm

1 stop25h 55m

$606

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Thu 11/27

8:00 am-12:25 pm

2 stops21h 25m

Kastrup Copenhagen

Thu 12/4

2:20 pm-1:55 pm

1 stop30h 35m

$606

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 1/16

3:50 pm-12:00 pm

1 stop13h 10m

Kastrup Copenhagen

Thu 5/14

12:25 pm-7:30 pm

1 stop14h 05m

$654

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 4/10

5:18 pm-6:45 pm

2 stops18h 27m

Kastrup Copenhagen

Fri 4/17

12:25 pm-10:27 am

2 stops29h 02m

$677

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

4:05 pm-9:20 am

2 stops34h 15m

Kastrup Copenhagen

Fri 3/13

6:50 am-2:55 pm

1 stop14h 05m

$685

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Thu 11/27

1:10 pm-11:25 am

2 stops15h 15m

Kastrup Copenhagen

Thu 12/4

1:10 pm-11:42 pm

2 stops17h 32m

$697

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

6:30 pm-2:00 pm

2 stops36h 30m

Kastrup Copenhagen

Fri 3/13

10:10 am-10:49 pm

2 stops18h 39m

$697

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 12/3

3:50 pm-1:35 pm

1 stop14h 45m

Kastrup Copenhagen

Sun 12/7

6:50 am-9:40 pm

2 stops21h 50m

$701

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Compare providers for flights from St. Louis to Copenhagen

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Copenhagen in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Copenhagen flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Copenhagen flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Copenhagen flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Copenhagen flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Copenhagen flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Copenhagen

Have a flexible travel schedule? Discover the best time to fly to Copenhagen from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Copenhagen

How far ahead should I book a flight from St. Louis to Copenhagen?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Copenhagen. Price data was last updated on October 24, 2025.

The best time to book flights from St. Louis to Copenhagen is 74 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from St. Louis to Copenhagen?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Copenhagen (average of $550). Flying from St. Louis to Copenhagen in June is currently the most expensive (average of $856). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to CPH?

Find hourly flight availability from St. Louis to Copenhagen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 28, 2025.

It’s optimal to fly from St. Louis to Copenhagen in the morning. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight in the evening.

Reviews of airlines servicing Copenhagen

Get insights into the airlines that provide service to Copenhagen. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Copenhagen. Reviews last updated October 28, 2025.
See what other customers who have flown with Delta, Scandinavian Airlines, and United Airlines from St. Louis to Copenhagen have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,994 reviews

Overall

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,994 reviews
Delta
7.9
Good
7,994 reviews

Overall

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Scandinavian Airlines
7.4
Good
1,543 reviews
Delta
7.9
Good
7,994 reviews

Overall

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
9,001 reviews
Delta
7.9
Good
7,994 reviews

Overall

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,032 reviews
Delta
7.9
Good
7,994 reviews

Overall

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Air Canada
7.1
Good
10,371 reviews
Delta
7.9
Good
7,994 reviews

Overall

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Copenhagen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Copenhagen?

    Airlines like Delta and Lufthansa fly from St. Louis to Copenhagen in about 15h 52m. The time it takes to get you to your destination can typically vary by up to 2h 01m. The distance between St. Louis and Copenhagen is about 4511 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from St. Louis to Copenhagen round-trip?

    Our cheapest airline available from St. Louis to Copenhagen is Delta. Our recent data shows that you can find tickets from as low as $593 on this airline. Additional options worth looking into are United Airlines and KLM, starting at $598 and $625 round-trip. These flights start at 30% lower than the current average price 3 months from now.

  • Can I find deals for flights from St. Louis to Copenhagen that include hotel bookings?

    Yes. In addition to deals on St. Louis to Copenhagen flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Copenhagen?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Copenhagen.

  • Can I find deals for business class flights from St. Louis to Copenhagen?

    Yes. Cheapflights offers flight deals from St. Louis to Copenhagen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Copenhagen?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Copenhagen (average of $550). Flying from St. Louis to Copenhagen in June is currently the most expensive (average of $856). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Copenhagen?

Book flights to Copenhagen if you plan to visit one of these locations
Kastrup

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Copenhagen

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Copenhagen flights

Top 8 airlines flying from St. Louis to Copenhagen

Discover the top 8 airlines that operate flights from St. Louis to Copenhagen. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$593Average$811FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$598Average$808FlexibilityNo cancel feeOn-time69%
KLMCheapest$625Average$755FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$655Average$957FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$659Average$950FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$663Average$1,076FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$690Average$800FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$733Average$1,056FlexibilityNo cancel feeOn-time71%

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